8401181 has 4 divisors (see below), whose sum is σ = 8419200. Its totient is φ = 8383164.

The previous prime is 8401157. The next prime is 8401193. The reversal of 8401181 is 1811048.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8401181 - 2⁶ = 8401117 is a prime.

It is a super-2 number, since 2×8401181² = 141159684389522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8401121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8291 + ... + 9248.

It is an arithmetic number, because the mean of its divisors is an integer number (2104800).

Almost surely, 2^8401181 is an apocalyptic number.

It is an amenable number.

8401181 is a deficient number, since it is larger than the sum of its proper divisors (18019).

8401181 is a wasteful number, since it uses less digits than its factorization.

8401181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18018.

The product of its (nonzero) digits is 256, while the sum is 23.

The square root of 8401181 is about 2898.4790839335. The cubic root of 8401181 is about 203.2887976157.

The spelling of 8401181 in words is "eight million, four hundred one thousand, one hundred eighty-one".